/usr/include/signum.h is in libdewalls-dev 1.0.0+ds1-4ubuntu1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 | #ifndef SIGNUM_H
#define SIGNUM_H
template <typename T> int signum(T val) {
return (T(0) < val) - (val < T(0));
}
#endif // SIGNUM_H
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